Steam-locomotive.



s. A. BARRIGKMAN.

STEAM LOGOMOTIVB. APPLIOATIOX TILED nn.4.- 1910.

B SHEETS-SHEET 2.

Patented Oct. 11, I910.

UNITED STATES PATENT OFFICE.

SYLVESTER A. BARRICKMAN, OF RIOI-IWOOD, WEST VIRGINIA.

s'rEAM-LoooMoTIvE.

To all whom it may concern:

Be it known that I, SYLvns'rER A. BAR- RICKMAN, a citizen of the UnitedStates, residing at Itichwood, in the county of Nicholas and State ofWest Virginia, have invented certain new and useful Improvements inSteam-Locomotives, fully described and represented in the followingspecification and accompanying drawings.

My invention relates to beveled-cog drivewheels and universalshaft-couplings, such as are employed in the locomotive engine improvedby Shay (Letters Patent No. 242,992, June 14, 1881), Wall and Felghtner(Letters Patent No. 893,041, July 1 1, 1908), and others.

The object. of my invention is to overcome the wear and tear in suchwheels and couplings as now manufactured, caused by the shearing of theparts, which shearing, when the engine is in operation, soon cuts thebolts off at the points where the bolted parts oin each other, being thepoints where the shearing takes place, distorts and enlarges thebolt-holes, necessitates new bolts, the drilling of new holes in theparts, and, ina short time, new parts; and destroys the cupping orbushing in which work the lugs of the coupling-yokes. I attain theseobjects by means of tapering wedges of steel, of uniform shape and size,containing dovetailed grooves, one in either edge of each wedge, runningits entire length, and corresponding mortises cut in the respectiveparts now secured together with bolts, onehalf of each mortise being cutin each'respective piece; which wedges, being driven into said mortises,are held firmly in place by means of their own friction and by means ofset-screws, all of .which are illustrated in the accompanying drawings,in which- Figure 1. is a partly sectional elevation of a drive-wheel ofa locomotive engine, with beveled-cog gear-wheel secured to the outsideof said drive-wheel; Fig. 2. is a side elevation ofthe outside of thedrive-wheel with the beveled-cog gear-wheel removed, showing onehalf ofeach of four wed es in place in the mortises in the main rivewheel body;Fig. 3. is an end view of the wedge; Fi 4. 1s a side elevation of auniversal sha t-coupling joint, such as is employed in a Shay engine,but with my dovetailed wedges in place, secured by setscrews; and Figs.5. and 6. represent an enlarged-partly sectional elevation of such anSpecification of Letters Patent.

Application filed January 4, 1910.

Patented Oct. 11, 1910. Serial No. 536,369.

universal shaft-coupling joint, showing the dove-tailed wedges inposition, secured by set-screws.

Similar letters of reference indicate corresponding parts.

In Fig. 1, (2/. represents the axle of a drive- Wheel of a locomotiveengine; 6, the main body of the drive-wheels; c, the spokes of thedrive-wheel; d, the beveled-cog wheel which gears with the pinion, p-(Fig. 4.); and e, the rim-flange of the beveled-cog Wheel, d, secured tothe main drive-wheel body by means of bolts, 7. G represents a wedge ofsteel, approximately 3" inches in length, 1%" inches thick, 2 incheswide at its head, and tapering uniformly on both edges to a Width ofapproximately 1%" inches at its point (but may be of any suitabledimensions), and. containing in the center of either edge a dove-tailedgroove or channel, of uniform depth, running its entire length. Hrepresents a mortise, onehalf of which is sunk in the main drivewheelbody, 6, and the other half of which is sunk into the flange, e, of thebeveled-cog gear-wheel, d. Said mortise, H, is cut slightly smaller thanthe double-dovetailed wedge, Gr, so that the latter may be driven firmlyinto the former and secured by means of friction and the set-screw, I.Four of these mortises are cut in each wheel, 90 degrees apart(measuring from the center of each mortise), so that when the wheelparts are assembled the eight mortises will form four apertures shapedeach to take a doubledovetailed wedge, G.

In Figs. 4., 5. and 6., j j are annular plates with foursemi-cylindrical grooves, 70, cut in each plate, as shown in the Shaycoupling, so that when said plates are assembled said grooves will formfour cylindrical openings, interposed in said plates 90 degrees apart(measuring from their centers), into which openings fit the brass cupsor bushings which take the four lugs of the coupling-yokes, L L. Grepresents the tapered double-dove tailed wedge of appropriatedimensions, similar to those used in securing the bevelcogged ear-wheelto the main drive-wheel body in igs. 1., 2. and 3. In securing togetherthe plates j j, any number of these wedges may be employed. Thesewedges, as

used in the coupling plates, are driven to 1 ward the center of theannular coupling plates which they secure together, and are held firmlyin place by means of their own friction and by means of set-screws, I.With these wedges, G, in place, in wheel and 0011- pling, all strain istaken off of the bolts, f,

and they may be dispensed with entirely; but it is thought that my noveldevice will prove useful as an auxiliary fastening as well.

I claim:

In a locomotive, the combination; with a universal shaft-coupling,having two fainnular plates, j 7'', containingsemi-0y Iical grooves, ksuited to take the lug;

pling-yokes, L L, of tapering d6 Wedges, G, and tapei'indouble-dovetailed mortise's, H, out, one-heft in each plate, by means ofwhich wedges and mortises, secured firmly, the one in the other, oftheir own friction, and with set-screws, I, said plates are held firmlyin position and prevented from sheari substantially as herein shown anddesori ed.

SYLVESTER A. BARRIGKMAN.

Witnesses: v

HARRY L. BARRICKMAN, J. J. MCCOY.

